JP5771889B2 - Route guidance device and route guidance method - Google Patents

Description

  The present invention relates to a route guidance device and a route guidance method for presenting guidance information on a route from a current position to a destination of a host vehicle.

  There is known a navigation device that prevents an entry to a non-guide road by displaying an icon notifying entry prohibition on the non-guide road when there is a non-guide road in front of the guidance branch point (see Patent Document 1). ).

JP 2008-2965 A

  However, if an icon that prohibits entry is displayed each time an intersection is guided, the amount of information that is displayed increases, which prevents the concentration of attention and consciousness at the guidance branch point where a left or right turn is guided, which is bothersome for the user. There was a problem of making you feel.

In the present invention, when a non-guide branch road crosses a guide road that leads to a destination, route guidance information including a road map showing a guide road that becomes discontinuous at the position where the non-guide branch road crosses is displayed. The above problem is solved.

According to the present invention, since the connection with the non-guide branch is informed using the discontinuous point of the guide road, an increase in the amount of displayed information can be suppressed, so that attention and consciousness are concentrated on the guide branch. The route can be guided without making the user feel bothersome.

It is a block block diagram of the route guidance unit 1000 of this embodiment. It is a figure which shows an example of the route guidance information containing the road map of this embodiment, a direction indication map, and a guidance map. It is a figure which shows an example of the route guidance information which notifies the connection with a non-guide branch road by the break of a guidance road. It is a figure which shows the other example of the route guidance information which notifies the connection with a non-guide branch road by the break of a guidance road. It is a figure which shows an example of the route guidance information containing a guidance map sequence, and is a figure which shows the example which changes the shape of the guidance map corresponding to the connection point of a non-guide branch. It is a figure which shows the other example of the route guidance information containing a guidance map row, and is a figure which shows the example which changes the display mode of the guidance map corresponding to the connection point of a non-guide branch. It is a figure which shows an example of the aspect of the route guidance information according to road width and vehicle speed. It is a flowchart figure which shows the operation | movement procedure of the route guidance unit 1000 of this embodiment.

<First Embodiment>
Hereinafter, a route guidance unit 1000 mounted on a vehicle according to the present embodiment will be described based on the drawings. The route guidance unit 1000 according to this embodiment includes a display device such as an LCD (liquid crystal monitor or liquid crystal on silicon), and displays route guidance information for guiding the host vehicle from the current position to the destination. Device.

  FIG. 1 shows a block diagram of a route guidance unit 1000 according to this embodiment. The route guidance unit 1000 of this embodiment has a general navigation function (route guidance function), and includes a control device 100, a vehicle position measurement unit 005, a map data storage unit 006, a map data search device 007, A route calculation device 008 and a route storage device 009, a speaker 011, an interface control device 012, an LCD 1 (016), an LCD 2 (017), and an LCD controller 018 are provided. The control device 100 and the other in-vehicle devices (002 to 018) are connected by a CAN (Controller Area Network) or other in-vehicle LAN, and exchange information with each other.

  First, the control device 100 will be described. The control device 100 included in the route guidance unit 1000 of the present embodiment has a function of controlling processing related to generation and presentation of route guidance information for guiding the host vehicle from the current position to the destination.

  This control device 100 executes a route guidance unit by executing a ROM (Read Only Memory) 102 storing a program for executing a route guidance information display process and a program stored in the ROM 102. A CPU (Central Processing Unit) 101 serving as an operation circuit functioning as 1000 and a RAM (Random Access Memory) 103 functioning as an accessible storage device are provided. As the operation circuit, instead of or together with the CPU (Central Processing Unit) 101, an MPU (Micro Processing Unit), a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array). Etc. can be used.

The control device 100 executes each function by cooperation of software for realizing a display control function for displaying route guidance information and the hardware described above.

  Hereinafter, functions realized by the control device 100 of the above-described route guidance unit 1000 will be described.

  The control device 100 acquires a route from the current position of the host vehicle to the destination. Specifically, the control device 100 acquires a route to the destination by the following method.

  First, the host vehicle position measurement device 005 uses a positioning signal indicating the current position of the host vehicle received by the GPS receiver 002, positioning data acquired by the gyro sensor 003, and movement data acquired by the vehicle speed sensor 004. Based on the current position of the vehicle.

  Further, the interface control device 012 acquires information on a destination (including a transit point) input via the remote controller 013, the touch panel 014, and / or the panel switch 015. The user can input various operation commands via the remote controller 013, the touch panel 014, and / or the panel switch 015, and can use various navigation functions provided in the route guidance unit.

  Then, the map data search device 007 accesses the map data storage unit 006 and searches for a map of an area corresponding to the acquired current position and destination of the vehicle. The map data storage unit 006 stores a set of node coordinates expressed by longitude and latitude as map information. A road or road link is defined by a node, and a guide road is formed by connecting two or more links. The map data includes road network information including a road list, a node table, a node list constituting an intersection (a node list connected to each other), and the like. The map data storage unit 006 includes the road type and road width of the road to which the link defined by each node belongs.

  Further, the route calculation device 008 refers to the retrieved map data, calculates a route from the current position to the destination, and writes the result in the route storage device 009. The route calculation device 008 is provided with data such as the average required time, distance, and toll required for traveling the route, and if necessary, reaches the input destination (through the waypoint to the destination). In addition to the route, it will automatically search for a route suitable for each condition, taking into account the conditions such as required time, travel distance, and toll.

  In addition, the control device 100 displays route guidance information for guiding the host vehicle from the current position to the destination.

  The control device 100 of the present embodiment displays route guidance information related to a guidance branch point such as an intersection. Based on the map data corresponding to the vicinity of the current position of the host vehicle read from the map data storage unit 006, the control device 100 generates image data for route guidance information for guiding the host vehicle at the guidance branch point. This is output to the LCD 1 (016). At this time, the control device 100 displays the vehicle position mark superimposed on the image data. Further, the control device 100 scrolls and displays the image data for route guidance information according to the movement of the host vehicle. Of course, the control device 100 moves and displays the vehicle position mark as the host vehicle moves without scrolling the image data for route guidance information for a predetermined time. Thereby, it can be shown in an easy-to-understand way where the host vehicle is traveling.

  Further, the control device 100 uses the LCD 2 (0017) to present route guidance information in front of the driver via a front window or a separate combiner. The LCD 2 (0017) is a so-called HUD (Head-Up Display), which can superimpose and display the route guidance information generated in the foreground.

  Further, the control device 100 displays image data for route guidance information and outputs voice data for route guidance information via the speaker 011.

  Next, route guidance information displayed by the control device 100 of the present embodiment will be described.

  FIG. 2 is a diagram illustrating an example of route guidance information according to the present embodiment. As shown in FIG. 2, the route guidance information of the present embodiment includes a road map showing a guide road that leads from the current position of the host vehicle to the destination, and a guide branch such as an intersection where the guide direction of the host vehicle changes. A direction indication diagram indicating the direction in which the host vehicle should travel and a guide map sequence for guiding the host vehicle from the current position to the guide branch are included.

The road map in the present embodiment is a road on which the host vehicle is currently traveling, and shows a road that is connected to the destination, and is represented by a continuous line. In addition, the direction indication diagram is, for example, an arrow figure indicating a right / left turn direction. Further, the guide diagram sequence is a set of guide maps 1, 2, 3,... N expressed as a predicted movement trajectory of the host vehicle reaching the guide branch road. In other words, following this guide map leads to a guide branch.

Further, as shown in FIG. 2, the route guidance information of the present embodiment further includes distance information from the current position of the host vehicle to the guidance branch road. The control device 100 refers to the map data in the map data storage unit 006 calculated based on the current position measured by the host vehicle position measurement device 005, and acquires distance information to the guidance branch road. This distance information is calculated by the route calculation device 008.

FIG. 2 is a diagram illustrating an example of route guidance information displayed on the head-up display with a road map, a direction indication map, and a guide map sequence superimposed on the foreground. As shown in FIG. 2, for example, when the direction in which the host vehicle is to travel is shown at an intersection, a road map showing a guide road that continues from the current position to the destination is displayed as a three-dimensional bird's eye view. On this road map, an arrow (direction instruction diagram) indicating the traveling direction on the guidance branch road (intersection) and the distance information to the guidance branch road (intersection to turn right and left) are superimposed. In addition, by displaying the road map in conjunction with the progress of the host vehicle, it is possible to sensibly inform the driver of the sense of distance on the guide branch, the approach speed to the guide branch, and the timing to reach the guide branch. .

By the way, when guiding the host vehicle to the destination, there may be a non-guide branch that should not turn right or left before (before) the guidance branch (intersection) that must turn right or left. In order to notify the driver of turning left and right with a certain amount of time, the driver is notified at a position on the front side (the vehicle side) of the guidance branch road that actually makes a right or left turn. For this reason, there may be a case where a guidance branch point where a right / left turn operation is guided and a non-guide branch where a right / left turn should not be made are mixed in the same route guidance information.

As described above, when the non-guide branch where the guide direction of the host vehicle does not change intersects the guide road that continues from the current position of the host vehicle to the destination, the control device 100 of the present embodiment A guide road that is discontinuous at the intersection is shown. There is no particular limitation on the method for indicating discontinuous positions for road maps showing continuous guide roads, but the thickness of the road map showing guide roads is changed, and notched figures are inserted into the road map showing guide roads. A technique such as inserting a break into a road map showing a guide road can be used.

FIG. 3 and FIG. 4 are diagrams showing examples of route guidance information for informing the connection between the traveling road and the non-guide branch when the non-guide branch road intersects the guide road. FIG. 3 shows route guidance information when the traveling road and the non-guide branch road cross each other in a cross shape, and FIG. 4 shows route guidance information when the non-guide branch road is connected to the running road in a T-shape.

As shown in FIG. 3 and FIG. 4, the control device 100 of the present embodiment is a road that shows a guide road that has a break at a position where a non-guide branch road intersects with a travel path of the own vehicle (a guide road that leads to a destination). Display the figure. That is, a cut is inserted into the road map of successive guide roads.

In this case, in the present embodiment, the non-guide branch is not included in the route guidance information (not displayed). In FIG. 3 and FIG. 4, the non-guide branch road that intersects the traveling road of the own vehicle (the guide road that leads to the destination) should actually extend in the left-right direction or the right-hand direction of the drawing. In the route guidance information of the form, the non-guide branch that should be extended is not displayed.

  As described above, in the route guidance information shown in FIGS. 3 and 4, when there is a non-guide branch road before the guide branch road, in order to notify the driver that the non-guide branch road intersects, The non-guide branch itself is not displayed. The driver can accurately understand the content of the route guidance information that “the right turn is the next intersection” due to the break of the guide road.

  In this way, in the displayed route guidance information, the intersection of the non-guide branch can be displayed so that it is less conspicuous than the intersection of the guide branch. It is possible to prevent a right / left turn operation at an intersection. In other words, in the displayed route guidance information, the intersection of the guide branch can be displayed more conspicuously than the intersection of the non-guide branch, so that the driver's attention can be concentrated on the intersection of the guide branch it can.

  In addition, since the driver can be informed of the existence of a non-guide branch without displaying an entry prohibition icon, the displayed information can be reduced, and the display content for route guidance can be simplified. it can. As a result, the driver can focus attention on the guidance branch point where the driver makes a right or left turn.

  In this example, the head-up display is taken as an example, but the route guidance information may be presented using an LCD in the meter or an LCD installed above the steering.

  Further, the control device 100 according to the present embodiment, when a non-guide branch road where the guide direction of the host vehicle does not change intersects the guide road, the color or shape of the guide map corresponding to the position where the non-guide branch road crosses. Displays route guidance information different from the color or shape of the guidance map at other positions.

FIG. 5 is a diagram illustrating an example of route guidance information in which the shape of the guidance map at the intersection of the non-guide branch is changed. As shown in FIG. 5, only the shape of the guide map at the intersection of the non-guide branch is a rectangle, which is different from the shape (circular shape) of the guide map at other positions. At this time, the color of the guide map at the intersection of the non-guide branch may be different from the color of the guide map at other positions.

In this way, by changing the guide map, it is possible to notify the intersection position of the non-guide branch road not only by the break of the guide road but also by the color and shape of the guide map.

  In addition, the control device 100 according to the present embodiment blinks or displays a guide map corresponding to a position where the non-guide branch road intersects when a non-guide branch road where the guide direction of the host vehicle does not change intersects the guide road. Route guidance information in which the color or shape of the taxiway changes with time is displayed.

FIG. 6 is a diagram showing an example of route guidance information that blinks the guidance map at the intersection of the non-guide branch or changes the color or shape of the guidance map with the passage of time. By doing in this way, it can be emphasized that the break of a guide road is an intersection of a non-guide branch. In particular, in the case of a three-junction road as shown in FIG. 6, there is a break on only one side of the guide road, so the intersection position of the non-guide branch can be surely notified by using the guide map.

  In this way, by giving a change to the guide map at the intersection of the non-guided branch road, the intersection of the non-guide branch road is emphasized and displayed relatively conspicuously, or without highlighting the intersection of the non-guide branch road It can be made relatively inconspicuous.

  Moreover, the control apparatus 100 of this embodiment changes the display mode of the guidance map in the intersection of a non-guide branch according to a road width and the vehicle speed of the own vehicle.

  Specifically, the control device 100 of the present embodiment, when the road width of the non-guide branch road is narrower than the road width of the traveling road on which the host vehicle travels, and the vehicle speed of the host vehicle is equal to or higher than a predetermined speed, The guide map corresponding to the position where the non-guide branch intersects is displayed in a display manner common to other guide maps.

  Furthermore, in the control device 100 of the present embodiment, the road width of the guide road on which the host vehicle travels is equal to the road width of the non-guide branch road, or the road width of the guide road on which the host vehicle travels is the non-guide branch road. When the vehicle speed is wider than the road width and the vehicle speed of the host vehicle is less than the predetermined speed, the guide map corresponding to the position where the non-guide branch road intersects is displayed in a display mode that is emphasized more than the other guide maps.

  Specifically, the control device 100 of the present embodiment has a display mode control map for route guidance information according to road width and vehicle speed, which is defined in advance. FIG. 7 is a diagram showing an example of the route guidance information display mode control map.

The control device 100 of the present embodiment travels on a general road on which the own vehicle currently travels is relatively large (road width is wide), and a non-guide branch road connected to the guide road is a narrow street (road width is When the host vehicle is traveling at a constant speed, the display mode control map of FIG. 7 is referred to, and the guide road in which the cut is inserted at the position where the non-guide branch road intersects is shown. Present only the road map. When the host vehicle is traveling on a general road with a wide road width, the connection point with a narrow street with a relatively narrow road width is inconspicuous. Further, since the host vehicle is traveling on the guide road at a predetermined vehicle speed, it is considered that the position of the guidance branch point is also grasped. For this reason, the guide map row is not displayed in the route guidance information, and only the road map of the guide road in which a break is inserted at the position where the non-guide branch road intersects is presented.

On the other hand, when the vehicle on which the vehicle is currently traveling is traveling on a general road that is relatively large (road width is wide), and the non-guide branch that connects to the guide road is a narrow street (road width is narrow) Even so, if the vehicle is decelerating, it can be predicted that the driver may be searching for a guidance branch. For this reason, the control device 100 changes the shape or color of the guide map corresponding to the position where the non-guide branch intersects, and displays in an easy-to-understand manner that it is an intersection of the non-guide branch.

Further, the control device 100 of the present embodiment is such that the road width of the guide road on which the host vehicle is currently traveling is equal to the width of the non-guide branch road, or the width of the guide road on which the host vehicle is traveling is the non-guide branch road. When the vehicle is traveling at a constant speed with reference to the display mode control map of FIG. 7, a guidance in which a break is inserted at a position where the non-guide branch road intersects is shown. The road map of the road is displayed, and the shape or color of the guide map corresponding to the position where the non-guide branch intersects is changed so that the driver can easily understand that the intersection is a non-guide branch.

On the other hand, in the control device 100 of the present embodiment, the width of the guide road on which the host vehicle currently travels is equal to the width of the non-guide branch road, or the width of the guide road on which the host vehicle travels is the non-guide branch. If the vehicle speed of the host vehicle is less than the predetermined speed, refer to the display mode control map of FIG. 7, and a guidance in which a break is inserted at a position where the non-guide branch road intersects In a display mode in which the road map of the road is displayed and the guide map corresponding to the position where the non-guide branch crosses is emphasized more than other guide maps, for example, blinking, and the color and shape change over time indicate.

When a road equal to or wider than this road is connected to the guide road of the host vehicle, the connecting point of the non-guide branch to be connected is conspicuous. The color or shape of the guidance graphic corresponding to the road is changed to inform the driver of the connection of the non-guide branch. In addition, when decelerating, there is a possibility of wondering whether to turn left or right on a non-guide branch, so in order to clearly notify that it is a non-guide branch, the blinking display, color or shape will change over time In a changing display mode, the intersection of the non-guide branch is highlighted and displayed.

In this way, for non-guided branches that are difficult for the driver to recognize as intersections (such as when a narrow street intersects with a wide guide road), by not displaying extra information, Keep attention. Non-guided branches that drivers can easily recognize (notice) as intersections, such as narrow streets such as narrow residential streets where narrow streets with the same road width or wider roads intersect. As for the road, by highlighting the guide map, it is possible to identify the non-guide branch and to focus on the guide branch. Thereby, the anxiety with respect to route guidance information can be reduced.

  In addition, the control apparatus 100 acquires the road width of the guide road and the road width of the non-guide branch road necessary for this processing from the route calculation device 008. The route calculation device 008 acquires road width information with reference to the map data in the map data storage unit 006 at the time of route calculation processing. Moreover, the control apparatus 100 acquires the vehicle speed of the own vehicle required for performing this process from the vehicle speed sensor 004.

The control device 100 generates route guidance information by superimposing the created road map, direction indication map, and guide map sequence.

When the host vehicle approaches the guidance branch road that guides the traveling direction within a predetermined distance, the control device 100 displays the image data of the intersection related to the route guidance information and the image indicating the traveling direction at the intersection. The data is displayed on the LCD 1 (016) or the LCD 2 (0017), and the voice text in the traveling direction is output from the speaker 011.

  Subsequently, a control procedure of the route guidance unit 1000 of the present embodiment will be described. FIG. 8 is a flowchart for explaining the control procedure of the route guidance unit 1000 of the present embodiment. This control is executed at regular time intervals in the route guidance unit 1000.

  First, in step S111, the control device 100 acquires the current position of the host vehicle. The current position of the host vehicle is detected by the host vehicle position measuring device 005.

  In subsequent step S112, the control device 100 acquires information on the guide route from the current position of the host vehicle to the destination. The route calculation device 008 calculates the guidance route. Incidentally, the route calculation device 008 is searched by the map data search device 007 based on the destination inputted via the interface control device 012 and the current position of the own vehicle measured by the own vehicle position measuring device 005. The route from the current position to the destination is calculated by referring to the map data.

  In the subsequent step S113, the control device 100 draws a road map showing a guide road that leads from the current position to the destination based on the calculated guide route. From this road map, the driver can be informed of the guide road on which the host vehicle should travel. The road map and the display coordinates of the road map are stored in the RAM 103.

  Moreover, in step S114, the control apparatus 100 extracts the guidance branch path from which the guidance direction of the own vehicle changes from the guidance path | route acquired by step S112. That is, the most recent guidance branch road that guides a left / right turn to the host vehicle is extracted.

  In subsequent step S115, control device 100 draws a direction indication diagram indicating the direction in which the host vehicle is to travel on a guidance branch path in which the guidance direction changes. The direction indication diagram is a figure of an arrow or the like indicating a right / left turn or a direction to be entered. The direction indication map can inform the driver of the direction in which the host vehicle should travel. This direction indication diagram and its display position are stored in the RAM 103.

  Moreover, in step S116, the control apparatus 100 extracts the position (intersection) where the non-guide branch road where the guidance direction of the own vehicle does not change on this guidance road intersects from the guidance route acquired in step S112.

  In step S117, the control device 100 makes a cut at the intersection (intersection) of the non-guide branch where the guidance direction of the host vehicle does not change in the road map drawn in step S113. Create road maps that are discontinuous at intersections. Instead of displaying new information in this way, the presence of a non-guide branch is displayed by changing the shape of the road map showing the guide road (for example, making a break), so the amount of information displayed is increased. Without making it possible, the driver can be informed of whether the route is a non-guide branch or a guide branch. The road map in which the cut is inserted or the display position of the cut (discontinuous point) is stored in the RAM 103.

  In step S117, the control device 100 determines that the current position acquired in step S111, the guide route acquired in step S112, the guidance branch point extracted in step S114, and the non-guidance extracted in step S116. Based on the branch point, a guide map is displayed that is displayed along a guide route from the current position to the destination and guides the host vehicle from the current position to the guide branch. From this guide diagram sequence, the driver can know the traveling direction and the position to change the traveling direction. In addition, when the non-guide branch road intersects the guide road, the control device 100 determines that the color or shape of the guide map corresponding to the position where the non-guide branch road crosses the color or shape of the guide map at another position. To be different. In addition, when the non-guide branch road intersects the guide road, the control device 100 blinks the guide map corresponding to the position where the non-guide branch road crosses, or the color or shape of the guide map responds to the passage of time. May be changed. The guidance diagram sequence, its display position, and display mode are stored in the RAM 103.

  Further, in step S119, the control device 100 acquires the width of the guide road that is currently traveling, the width of the non-guide road, and the vehicle speed of the host vehicle. The width of the guide road and the width of the non-guide road are acquired from the map data search device 007 or the route calculation device 008 that can access the map data storage unit 006. The vehicle speed of the host vehicle is acquired from the vehicle speed sensor 004.

Then, in step S120, the control device 100 refers to the display mode control map of FIG. 7, and based on the relationship between the width of the guide road currently traveling and the width of the non-guide road, and the vehicle speed of the host vehicle, To change. Specific control is executed in accordance with a display mode control map as shown in FIG.

Explaining an example of this processing, the control device 100 of the present embodiment is a case where the road width of the non-guide branch road is narrower than the road width of the guide road and the non-guide branch road is inconspicuous, and the vehicle speed is predetermined. When the driver is not at a loss for speed or more, a road map including discontinuous points and a uniform guide map sequence are shown without conspicuous non-guide branch.

The control device 100 of the present embodiment, it road width of induction road road width of induction road road width equal to or vehicle non guidance branch path travels is wider than road width of the non-guiding branch path If the non-guide branch is conspicuous, but the vehicle speed of the vehicle is less than the predetermined speed, it is assumed that the driver is at a loss. In such a situation, there are other guide maps corresponding to the position where the non-guide branch crosses. The flashing display and the color or shape are changed over time.

By this process, the display mode of the guide map sequence is changed according to the visual environment of the non-guide branch and the driver's state, so that the driver is not bothered and attention to the guide branch can be reduced. Not display a proper guide diagram.

  In the following step S121, the control device 100, in step S118, the road map drawn in step S113, the direction indication map sick in step S115, the road map in which the cut drawn in step S117 is inserted, and in step S118. Based on the drawn guide map, route guidance information is generated that is displayed along a guidance route from the current position to the destination and that guides the host vehicle from the current position to the guidance branch. With this route guidance information, the host vehicle can be guided to the destination.

  Furthermore, in step S122, the control device 100 displays the route guidance information generated in step S122 on the LCD 2 (017) functioning as a head-up display. The timing to display is determined based on the positional relationship between the host vehicle and the guide branch and the vehicle speed of the host vehicle. The control device 100 causes the route guidance information to be presented a predetermined time before the expected time for the host vehicle to reach the guidance branch road.

Since this invention is comprised as mentioned above and acts as mentioned above, there exist the following effects.

According to the route guidance unit 1000 of the present embodiment, the increase in the amount of information displayed is suppressed by notifying the connection with the non-guide branch using the discontinuous point of the guide road, so that a right / left turn is guided. It is possible to concentrate the attention and consciousness on the guidance branch point and guide the route without making the user feel bothersome.

In other words, according to the route guidance unit 1000 of the present embodiment, a road map (linear) showing a guide road extending from the current position to the destination, and a direction indication map (arrows and the like) showing the direction in which the vehicle should travel on the guidance branch road ) Is displayed, and a non-guide branch road intersects the road map, a road map showing a guide road that becomes discontinuous at the position where the non-guide branch road crosses is displayed. It is possible to notify the driver of the presence of a non-guide branch while suppressing an increase in the amount of information that is generated. The driver can confirm the position of the non-guide branch where the right / left turn operation should not be performed based on the presented route guidance information. In addition, new icons (graphics) that indicate the presence of non-guided branches are not displayed, so attention and consciousness are concentrated on the guidance branch point where the left / right turn is guided, and the user feels annoyed. There is no.

  In addition, as a guide road that becomes discontinuous at the position where the non-guide branch road intersects, a road map showing the cut-off guide road is displayed at the position where the non-guide branch road crosses, thereby obtaining the above-described action and effect. be able to. At this time, since the non-guide branch that intersects the guide road is not displayed in the route guidance information, it is possible to prevent the driver from making a right / left turn operation at the non-guide branch.

  Further, by including distance information from the current position of the host vehicle to the guidance branch path in the route guidance information, the driver can be notified of the position of the guidance branch path from the viewpoint of distance.

  In addition, by including a guide map for guiding the host vehicle from the current position to the guidance branch path in the route guidance information, the driver can be notified of the position of the guidance branch path from the relationship with the current position. The driver can know that the guidance branch point is on the traveling direction side when the guide diagram sequence extends forward.

  In this way, the non-guide branch point is not displayed by displaying the non-guide branch road in the route guidance information, but displaying the discontinuous portion (for example, the cut portion) of the guide road and the guide map line along the guide road. Then, the driver can recognize that it is non-guided (do not turn left or right). In addition, the host vehicle can be guided to the guidance branch point by a guide map along the guide road.

  In addition, regarding the guide map included in the route guidance information, the color or shape of the guide map corresponding to the position where the guide branch intersects is different from the color or shape of the guide map at other positions. By changing a part of the side-by-side guide map sequence (point sequence), the driver can clearly recognize the existence of a non-guide branch point and non-guide (do not turn right or left). Can do.

  In addition, for the guide map included in the route guidance information, the guide map corresponding to the position where the guide branch intersects blinks, or the color or shape of the guide map changes over time. The position of a non-guide branch point can be emphasized by changing the display mode of a part of the guide map (point sequence) arranged side by side over time, and the intersection is non-guided (turn left or right) You can explicitly let the driver know that

  Furthermore, according to the road width of the guide road and the non-guide branch road and the speed of the host vehicle, the color or shape of the guide map corresponding to the position where the guide branch road intersects or the display mode thereof is changed. Since the display regarding the non-guide branch point can be performed according to the visual recognition ability and the degree of understanding, confusion between the guide branch point and the non-guide branch point can be prevented.

In addition, when the road width of the non-guide branch road is narrower than the width of the guide road on which the host vehicle travels and the vehicle speed of the host vehicle is equal to or higher than a predetermined speed, it corresponds to the position where the non-guide branch road intersects. The guide diagram is displayed in a display manner common to other guide diagrams. When the host vehicle is traveling on a general road with a wide road width, the connection point with a narrow street with a relatively narrow road width is inconspicuous. Further, when the vehicle is traveling at a constant speed, it can be determined that the driver is not paying attention to the non-guide branch. In the present embodiment, in such a case, unnecessary information regarding the non-guide branch point is not given, so that the driver's consciousness can be concentrated on the guide branch.

Furthermore, the road width of the guide road on which the host vehicle travels is equal to the road width of the non-guide branch road, or the width of the guide road on which the host vehicle travels is wider than the road width of the non-guide branch road. When the vehicle speed is less than the predetermined speed, the guide map corresponding to the position where the non-guide branch road intersects is displayed in a display mode in which the guide map is emphasized more than other guide maps. When a road equal to or wider than this road is connected to the guide road of the host vehicle, the connection point of the non-guide branch to be connected is conspicuous. When the vehicle decelerates, it may be wondering whether to turn left or right on a non-guide branch, so the blinking display, color, or shape of the time Display in a display mode that changes over time.

As described above, for a non-guide branch that is difficult for the driver to recognize (not paying attention to) as a narrow street crosses a wide guide road, unnecessary information is not displayed and the guide branch point is displayed. Can keep the attention. On the other hand, unguided branches that drivers can easily recognize (interest) as narrow intersections, such as narrow streets such as narrow residential streets, where narrow streets of the same road width or wider roads intersect. As for the road, it is possible to distinguish between the non-guide branch road and the guide branch road by highlighting the guide map. Thereby, the anxiety with respect to route guidance information can be reduced.

  The embodiment described above is described for facilitating the understanding of the present invention, and is not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

  That is, in this specification, the route guidance unit 1000 will be described as an example of the route guidance device according to the present invention, but the present invention is not limited to this.

  Further, in this specification, as an example of the route guidance device according to the present invention, a route guidance unit 1000 including the control device 100 including the CPU 101, the ROM 102, and the RAM 103 will be described as an example. However, the present invention is not limited to this. .

Further, in this specification, a route guidance unit 1000 having a route guidance information display control function will be described as an example of a route guidance device having a display control unit according to the present invention. It is not limited.

1000 ... route guidance unit 100 ... control device 101 ... CPU
102 ... ROM
103 ... RAM
002 ... GPS receiver 003 ... Gyro sensor 004 ... Vehicle speed sensor 005 ... Vehicle position measurement device 006 ... Map data storage unit 007 ... Map data search device 008 ... Route calculation device 009 ... Route storage device 011 ... Speaker 012 ... Interface control device 013 ... Remote control 014 ... Touch panel 015 ... Panel switch 016 ... LCD1
017 ... LCD2
018 ... LCD controller

Claims (8)

A route guidance device comprising display control means for displaying route guidance information for guiding the host vehicle from a current position to a destination on a display device,
The display control means includes
A road map showing a guide road that leads from the current position of the host vehicle to a destination; a direction indication diagram that indicates a direction in which the host vehicle should travel with respect to a guide branch that changes the guide direction of the host vehicle; and the host vehicle Route guidance information including a guide map sequence for guiding the vehicle from the current position to the guidance branch,
When a non-guide branch that does not change the guidance direction of the host vehicle intersects the guide road, a road map showing a guide road that is discontinuous at a position where the non-guide branch intersects is displayed.
When a non-guide branch that does not change the guidance direction of the host vehicle intersects the guide road, the color or shape of the guide map corresponding to the position where the non-guide branch crosses is the color or shape of another guide map. Route guidance device that displays different route guidance information. A route guidance device comprising display control means for displaying route guidance information for guiding the host vehicle from a current position to a destination on a display device,
The display control means includes
A road map showing a guide road that leads from the current position of the host vehicle to a destination; a direction indication diagram that indicates a direction in which the host vehicle should travel with respect to a guide branch that changes the guide direction of the host vehicle; and the host vehicle Route guidance information including a guide map sequence for guiding the vehicle from the current position to the guidance branch,
When a non-guide branch that does not change the guidance direction of the host vehicle intersects the guide road, a road map showing a guide road that is discontinuous at a position where the non-guide branch intersects is displayed.
When a non-guide branch where the guidance direction of the host vehicle does not change intersects the guide road, the guide map corresponding to the position where the non-guide branch crosses blinks, or the color or shape of the guide map A route guidance device that displays route guidance information that changes with time. In the route guidance device according to claim 1 or 2,
When the road width of the non-guide branch is narrower than the width of the guide road on which the host vehicle travels and the vehicle speed of the host vehicle is equal to or higher than a predetermined speed, the display control means A route guidance device that displays a guidance map corresponding to a position where a road intersects in a display manner common to other guidance maps. In the route guidance device according to any one of claims 1 to 3,
The display control means is configured such that the road width of the guide road on which the host vehicle runs is equal to the road width of the non-guide branch road, or the road width of the guide road on which the host vehicle runs is on the non-guide branch road. When the vehicle speed is wider than the width and the vehicle speed is less than a predetermined speed, the route guidance is displayed in a display mode that emphasizes the guidance map corresponding to the position where the non-guide branching road intersects with other guidance maps. apparatus. In the route guidance device according to any one of claims 1 to 4,
The display control means, when displaying the route guidance information, if a non-guide branch that does not change the guidance direction of the host vehicle intersects the guide road, the display control means has a break at the intersection of the non-guide branch. A route guidance device for displaying a road map showing a guide road with a road. In the route guidance device according to any one of claims 1 to 5,
The route guidance information further includes distance information from a current position of the host vehicle to a guidance branch road. A route guidance unit mounted on a vehicle includes a display device that displays guide route information, and a control device.
When the control device guides the host vehicle from the current position to the destination, a road map showing a guide road that leads from the current position of the host vehicle to the destination, and a guide branch that changes the guide direction of the host vehicle Performing a step of obtaining route guidance information including a direction indication diagram indicating a direction in which the host vehicle should travel and a guide map sequence for guiding the host vehicle from a current position to a guidance branch path ,
The display device is a route guidance method for executing a step of displaying route guidance information obtained by the control device ,
When the non-guided branch road where the guidance direction of the host vehicle does not change intersects the guide road, the control device obtains a road map indicating the guide road that is discontinuous at the position where the non-guided branch road intersects . Executing the step, wherein the display device executes the step of displaying the road map obtained by the control device ;
The control device, when said non-guiding branch path guidance direction does not change of the vehicle crossing the induction road, the color or shape of the induction diagram the non guidance branch passage corresponds to the position that intersects the other A route guidance method that executes a step of obtaining route guidance information different from a color or shape of a guide map, and wherein the display device executes a step of displaying the route guidance information obtained by the control device . A route guidance unit mounted on a vehicle includes a display device that displays guide route information, and a control device.
When the control device guides the host vehicle from the current position to the destination, a road map showing a guide road that leads from the current position of the host vehicle to the destination, and a guide branch that changes the guide direction of the host vehicle Performing a step of obtaining route guidance information including a direction indication diagram indicating a direction in which the host vehicle should travel and a guide map sequence for guiding the host vehicle from a current position to a guidance branch path,
The display device is a route guidance method for executing a step of displaying route guidance information obtained by the control device,
When the non-guided branch road where the guidance direction of the host vehicle does not change intersects the guide road, the control device obtains a road map indicating the guide road that is discontinuous at the position where the non-guided branch road intersects. Perform steps,
The display device executes the step of displaying the road map obtained by the control device;
When the non-guided branch road where the guidance direction of the host vehicle does not change intersects the guide road, the control device blinks the guide map corresponding to the position where the non-guided branch road intersects or A route guidance method that executes a step of obtaining route guidance information whose color or shape changes with the passage of time, and wherein the display device executes a step of displaying the route guidance information obtained by the control device.

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